diff --git a/qrenderdoc/CMakeLists.txt b/qrenderdoc/CMakeLists.txt
index 390be0f06..4ac410fc0 100644
--- a/qrenderdoc/CMakeLists.txt
+++ b/qrenderdoc/CMakeLists.txt
@@ -1,7 +1,10 @@
 set(output_dir ${CMAKE_BINARY_DIR}/bin)
 
-include(ExternalProject)
-ExternalProject_Add(qrenderdoc
-    DEPENDS renderdoc
-    SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}
-    CONFIGURE_COMMAND qmake "CONFIG+=debug" "DESTDIR=${output_dir}" ${CMAKE_CURRENT_SOURCE_DIR})
+# The case here is deliberately not matching the executable name
+# This means the custom command doesn't create this output file,
+# which causes CMake to rerun this target every time so that Qt
+# can do dependency checking and rebuild anything necessary.
+add_custom_command(OUTPUT QRenderDoc
+	COMMAND qmake "CONFIG+=debug" "DESTDIR=${output_dir}" ${CMAKE_CURRENT_SOURCE_DIR}
+	COMMAND MAKEFLAGS= make --no-print-directory)
+add_custom_target(build-qrenderdoc ALL DEPENDS QRenderDoc)